
You can stare at your BOARD all day,
she's still going to be right.
The Big Bang Theory Season 1, Episode 5

I don't come into your house
and touch your BOARD.
The Big Bang Theory Season 1, Episode 5

Do you see it on the BOARD?
The Big Bang Theory Season 11, Episode 11

I looked over the BOARD,
and it turns out you were right.
The Big Bang Theory Season 3, Episode 4

Dr. Koothrappali, as your superior,
I forbid you from writing on my BOARD.
The Big Bang Theory Season 3, Episode 4